Half to george h



UN TE STATES PATENT OFFICE.

WILLIAM BATTY, OF PHILADELPHIA,PENNSYLVANIA, ASSIGNOR OF ONE- HALF TO GEORGE H. PERKINS, OF SAME PLACE.

FlRE-BRICK.

SPECIFICATION forming part of Letters Patent No. 270,175, dated January 2, 1853,.

' Application filed July 29,1882. (No specimens.

To all whom 'itmay concern of suitable'form for the manufacture of bricks. Be it known that, I, WILLIAM BATTY, of These bricks are baked in the usual Way and .Philadelphia, Pennsylvania, have invented a form an article especially adapted for use in new article of maimt'actureviz., Fire-Brick withstanding high temperatures, as in fur 25 5 Composed of Fire Clay, Kaolin, and Oalnaces, kilns, and the like.

cined Uil-Coke--as hereinafter described and I do not confine myself to the exact proporclairned. tions herein given, as the same may to some To carry out my invention, Iintroduee asuitextent be departed from without changing the able quantity of oil-coke into a muffle or other nature of my invention. Q 10 suitable calcining-furnace, and I therein sub- Having thus described my invention, I

ject said oil-coke to the action of heat for such claim time as is necessary to drive off bituminous A new articleof manufacturea fire-brick matters and leave the oil-coke charcoal in a consisting of fire-clay, kaolin, and calcined oildry condition. L coke-substantially as specified. 5

l 5 The charcoal produced as above described is In testimony whereof I have hereunto signed crushed or otherwise finely divided and is my name this 14th day of July, A. D. 1882.

mixed with fire-clay and kaolin in the proporlions of'about twenty per cent. (20 tire-clay, WILLIAM ten pereent.(10%)kaolin,andseventypereent. In presence of- 2o (70 %)oil-coke charcoal. This mass is moist- W. U. STRAWBRIDGE,

ened and mixed and then pressed into molds J. BONSALL TAYLOR. 

